Stone-splitting machine.



E. A. STROUD.

STONE SPLITTING MACHINE.

APPLIOATION FILED 11:12.9, 1914.

1, 1 17,926, Patented Nov. 17, 1914.

2 SHEETS-SHEET 1.

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E. A. STROUD.

STONE SPLITTING MACHINE.

APPLICATION FILED FBB.9, 1914.

1,1 17,926, Patented Nov. 17, 1914,

2 SHBBTS-SHEET 2.

TNE NORRIS PETFQS C0,. PHOTfl-LHHO" WASHINGTON. D C,

EDWARD A. STROUD, 0F SPRING LAKE, NEW JERSEY.

STONE-SPLITTING MACHINE.

Specification of Letters Patent.

Patented Nov. 17, 1914.

Application filed February 9, 1914. Serial No. 817,586.

To all whom it may concern Be it known that I, EDWARD A. SHOW, a citizen of the United States, residing at Spring Lake, in the county of Monmouth and State of New Jersey, have invented cer tain new and useful Improvements in Stone- Splitting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in machines for splitting stones and resides in the provision of a machine which will split artificial stone in a reliable and expeditious manner and in such a way that the artificial stone when split will take on the appearance of natural stone.

In molding artificial stone blocks, for instance concrete blocks, the finished article takes on the appearance of the mold surface and it is particularly desirable to eliminate this artificial appearance so as to give the stone or block the appearance of natural stone.

My invention aims to provide a machine which will operate to split the stone and in so doing give the split stone all the appearances of natural stone.

An important object of my invention s to provide a machine of the character described which consists of a plurality of coactlng splitting blades that are arranged to simultaneously strike the artificial stone or block upon all sides thereof so that the result before described is had.

Another important object of my invention is to provide a machine of the charactendescribed which is simple as to construction, reliable and eflicient in operation and cheap to manufacture.

The above and additional objects are accomplished by such means as are illustrated in the accompanying drawings, described in the following specification and then more particularly pointed out in the claims which are appended hereto and form a part of th1s application.

lVith reference to the drawings, wherein I have illustrated the preferred embodiment of my invention as it is reduced to practice, and throughout the several views of which similar reference numerals designate corresponding parts: Figure 1 is a top plan View showing my device as it would appear in assembled position, Fig. 2 is a side elevation of the frame or casingfor the machine, Fig. 3 is a side elevation of the frame or casing for the machine opposite to that shown in Fig. 2, Fig. 4 is a cross sectional view taken on line H of Fig. 1, and Fig. 5 is a sectional view taken on line 55 of Fig. 1 at right angles to the section line of Fig. l.

Referring to the drawings the numeral 1 designates as an entirety a frame consisting of side walls 2 and 3, connected by angle bars i and 5. This frame 1 is arranged to receive the artificial stone block to be treated as previously described.

Slidably mounted upon the side walls 2 and 3 are splitting elements designated 7 and 8 as entireties. The splitting elements 7 and S consist of approximately rectangular plates 9 and 10 that are secured in spaced horizontal relation to each other in any suitable manner and have mounted be tween their inner portions a channel shaped knife holder 11. The ends of this holder 11 are extended at right angles to the body portion thereof and provide flanges 12 which engage the inner edges of the plates 9 and 10 and are flush at their ends with the outer flat surfaces of the plates. Splitting knives 13 are secured within the holder 11 and project beyond the inner faces of the holders. A plurality of spaced apertures are formed through the plates 9 and 10 and are arranged to aline with apertures formed inthe holder 11 and knife 13. These apertures are arranged to receive fastening means 15 which preferably have nuts 16 turned on their terminals. The elements 7 and 8 are slidable between angle bars 17 that are secured longitudinally upon the inner faces of the walls 2 and 3. The angle bars 17 are arranged in pairs, each bar being spaced from the other of the pair sufiiciently to slidably receive the plates 9 and 10 of the splitting elements 7 and 8. The fastening means 15 serve to hold the holder and blade in assembled relation to the plates 9 and 10. The holder 11 and knives 13 are in the preferred form a great deal shorter than the plates 9 and 10 and arranged centrally of the ends of the plates for a purpose to be later described.

It will be readily seen that larger knives 13 and holder ll-may be used in connection with operating upon large stones or blocks and the removal and fitting of the holders and knives is provided by the construction and arrangement described. Operating rods or bars 18 having spaced arms 19 at their inner terminals are secured to the rear edge of the plates 9 andlO centrally of the ends thereof by means of bolts 20 or other suitable fastening means which are inserted through the arms 19, plates 9 and and have nuts 21 turned upon their lower terminals. A spacing block 22 is interposed between the plates 9 and 10 and receive the 10 bolts 20 as clearly shown in Fig. 5 in the drawings. The plates 9 and 10 are cut away at their outer edges adjacent the ends thereof to provide outward extension portions 23.

Mounted in longitudinal slots 24 formed in the walls 2 and 3 are blade holding plates 25 and 26 that are connected at their outer edges with operating rods 27 similar to the ones 18 previously described. The connection being preferably the same as described in connection with the rods 18. The inner longitudinal edges of the plates and 26 are longitudinally recessed as at 27 to receive blades 28. Suitable fastening means 29 are inserted through the plate 26 and 25 blade 28 to secure the blades in position.

The blade holding plates 25 and 26 are arranged to it snugly between the plates 9 and 10 of the elements 7 and 8 and are slidable therebetween. The blades 28 on the plates 30 25 and 26 are of the same length as the plates and arranged to cooperate with the blades 13 in operating upon the stone or block. It will thus be seen that the blades 28 and 13 are arranged in the same horizontal plane and are adapted to be moved simultaneously toward the center of the casing 1 to strike the sides of a block or stone.

, In Figs. 1, l and 5 I have illustrated a block or stone to be operated upon and designated A. This, block is mounted within the center of the casing or frame 1. Suitable means such as compressed air or some other operating power may be employed to move the blades inwardly toward the block A.

1 preferably provide a vertically adjustable supporting element designated 29 as an entirety for the purpose of adjustably.

supporting the block or stone to be treated.

This element may be operated by means of compressed air or some other suitable source of operating power and consists of a vertical plunger or piston having a suitable shelf or support on one end to support the block.

ihe adjustable support enables the stone or block to be treated to be positioned in such a way that difi'erent thicknesses or out portions are provided.

In operation the stone is placed in the cen-i ter of the support 29 as illustrated in Figs.

1, a and 5 and the four blades are moved simultaneously to engage the several sides of the block, the blades 28 sliding between the plates 9 and 10 which support the blades 13. W hen the four blades engage the sides of the block or stone with sufficient pressing force the block will be split in such a way that it takes on the appearance of natural stone. The len 'th of the blade 13 is governed by the size of the block and it will be readily seen that the necessary adjustment is readily provided.

It will be readily seen that through the operation described an artificial block o r stone is split in such a way that the natural stone surface appearance is provided for the split parts of the block. The blades 28 en gage the'ends of the holder 11 and are lim ited as to inward movement in this respect.

In reduction to practice, I have found that the form of my invention, illustrated in the drawings and referred to in the above descriptioinas the preferred embodiment, is the mostefiicient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of my inven- 99 tion, as'defined in the appended claims.

lVhat is claimed is 1. A stone splitting machine consisting of a frame including guides, a pair-of slidable knife holding blades in certain guides of said frame, a knife carried by each of said blades extending approximately the full length of said frame, pairs of slidable plates arranged in a horizontal plane and upon the other guides of the frame, a knife holder mounted between said plates, knives in said knife holders, and the other of said knife .holding plates being slidable between the spaced horizontal knife holding plates.

2. In astone splitting machine having a rectangular frame including guides, knives slidable in certain guides of the frame and movable toward the center of the frame, said knife holding plates arranged in pairs on the other guides of the frame, and being disposed in a horizontal plane, knife holders secured between the plates of each pair and centrally of the ends of said plates, a knife in each of said knife holders and said knife holding plates slidably receiving therebetween the first named knives.

3. A stone splitting machine comprising a rectangular skeleton frame consisting of side walls, and spaced bars arranged in pairs and connecting the side walls, said side walls having openings therethrough longitudinally, knives reciprocally mounted within theopenings, guide strips on the inner faces of said side walls, and knives slidable between the bars of the frame and the guide strips.

4. A' stone splitting machine comprising a rectangular frame including guides, knives equal in'length to certain opposed sides of said frame and slidable in certain of said 130 guides toward and away from the center of theframe, knife holding plates slidably mounted within the other guides of the frame, means carried on the first named opposed sides of the frame on the inner faces of said sides to guide said knife holding plates, a knife holder positioned between the knife holding plates of each pair, a knife in said knife holders, said knife holding plates extending the length of the opposed sides in which they are mounted and slidably receiving the first named knives therebetween and means to connect the knives with a suitable source of power whereby they are moved back and forth.

5. A stone splitting machine comprising a rectangular frame, including guides, knives equal in length to certain opposed sides of said frame and slidable in said guides toward and away from the center of the frame, knife holding plates slidably mounted within the other opposed sides of the frame,

means carried on the first named opposed sides of the frame on the inner faces of said sides to guide said knife holding plates, a knife holder positioned between the knife holding plates of each pair, a knife in said knife holders, said knife holding plates extending the length of the opposed sides in which they are mounted and slidably receiving the first named knives therebetween and means to connect the knives with a suitable source of power whereby they are moved back and forth, and means positioned centrally within the frame to have mounted thereon the article which is to be operated upon.

In testimony whereof I afliX my signature in presence of two witnesses.

EDWARD A. STROUD.

WVitnesses:

CHAS. J CHEESEM, C. M. NEWTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

